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Finding the Fourth Proportional to 257,479.97, 355,343.22 and 142,794.50

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Solution

The fourth proportional to 257,479.97, 355,343.22 and 142,794.50 is: 197,067.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,479.97 : 355,343.22 = 142,794.50 : x
  2. Step 2: Convert to fraction form
    257,479.97/355,343.22 = 142,794.50/x
  3. Step 3: Cross multiply
    257,479.97x = 355,343.22 × 142,794.50
  4. Step 4: Simplify right side
    257,479.97x = 50,741,055,651.57
  5. Step 5: Solve for x
    x = 50,741,055,651.57/257,479.97
  6. Step 6: Final answer
    x = 197,067.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.